SGS Thomson Microelectronics L9826 Datasheet
Octal Low-Side Driver for resistive and inductive loads with
serial/parallel input control, output protection and diagnostic
■
OUTPUTS CURRENT CAPABILITY UP TO
500mA, R
■
PARALLEL CONTROL INPUTS FOR
OUTPUTS 1 AND 2
■
SPI CONTROL FOR OUTPUTS 1 TO 8
■
RESET FUNCTION WITH RESET SIGNAL AT
NRES PIN OR UNDERVOLTAGE AT V
■
- INTRINSIC OUTPU T VOLTAG E C LA MPING
AT TYP. 50V
■
OVERCURRENT SHUTDOWN AT OUTPUTS
3 TO 8
■
SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 1 AND 2
■
OUTPUT STATUS DATA AVAILABLE ON THE SPI
= 2.2Ω AT TJ = 25°C
ON
CC
L9826
SO20 (16+2+2)
ORDERING NUMBER: L9826
DESCRIPTION
The L9826 is a Octal Low-Side Driver Circuit, dedicated
for automotive applications. Output voltage clamping is
provided for flyback current recirculation, when inductive loads are driven. Chip Select and Serial Peripheral
Interface for outputs control and diagnostic data transfer. Parallel Control inputs for two outputs.
BLOCK DIAGRAM
NON1
NON2
NCS
CLK
SDI
SDO
nRES
V
CC
V
CC
V
CC
V
CC
V
CC
Q1
Diag1
Q2
Diag2
SPI
Interface
Shift Register
V
CC
Reset
Undervoltage
RESET
V
CC
V
CC
1
3
S
2
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Output Latc h
Diag1
Diag2
Diag3
Diag4
Diag5
Diag6
Diag7
Diag8
Reset
Latch / Driver
Fault Latch
S
Q3
Diag3
Q4
Diag4
Q5
Diag5
Q6
Diag6
Q7
Diag7
Q8
Diag8
R
Overtemperature Detection
Latch / Driver
+
-
V
DG
R
+
-
V
DG
I
OL
CH1
CH2
I
OL
CH3
CH4
CH5
CH6
CH7
CH8
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
October 2002
GND
1/12
L9826
PIN FUNCTION
N° Pin Description
1 Out 6 output 6
2 Out 1 output 1
3 nRes asynchronous nRes
4 NCS chip select (active low)
5 GND device ground
6 GND device ground
7 NON1 control input 1
8 SDO serial data output
9 Out 8 output 8
10 Out 3 output 3
11 Out 5 output 5
12 Out 2 output 2
13 SDI serial data input
14 CLK serial clock
15 GND device ground
16 GND device ground
17 NON2 control input 2
18 V
19 Out 7 output 7
20 Out 4 output 4
PIN CONNECTIONS
CC
supply voltage
(Top view)
OUT6
OUT1
nRES
NCS
GND
GND
NON1
20
2
3
4
5
6
7
19
18
17
16
15
14
OUT41
OUT7
Vcc
NON2
GND
GND
CLK
2/12
SDO
OUT8 OUT2
OUT3 OUT5
8
9
10
PINCON_L9826
13
12
11
SDI
L9826
ABSOLUTE MAXIMUM RATINGS
For voltages and currents applied externally to the device
Symbol Parameter Test Condition Min. Typ. Max. Unit
CC
Supply voltage
-0.3 7 V
V
Inputs and data lines
(NONx, NCS, CLK, SDI, nRes)
V
Voltage
IN
-0.3 7 V
(NONx, NCS, CLK, SDI, nRes)
I
IN
Protection diodes current
1)
T ≤ 1ms -20 20 mA
Outputs (Out1 ... Out8)
V
OUTc
I
OUT
E
OUTcl
Notes: 1. All inputs are protected against ES D according to MIL 883C; tested with HBM at 2KV. It cor responds to a dissipated energy E £
Continuous output voltage -1,0 45 V
Output current
Output clamp energy I
0,2mJ.
2. Transient pulses in accordance to D IN40839 part 1, 3 and ISO 7637 P art 1, 3.
2)
≤ 250mA 10 mJ
OUT
-2 1,0 A
For currents determined within the device:
Symbol Parameter Test Condition Min. Typ. Max. Unit
Outputs (Out1 ... Out8)
I
OUT
Output current (Out1 ... Out8) 1,0 A
∑
I
OUTi
Total average-current all outputs
3)
2.0 A
i = 1-8
3. When op eratin g t he dev ic e with sh ort c ircui t at more t han 2 out puts at t he sam e tim e, dama ge d ue to elec tric al ov erstre ss may
occur.
THERMAL DATA
Symbol Parameter Test Condition Min. Typ. Max. Unit
Thermal shutdown
T
Thermal resistance
R
thjA-one
R
thjA-all
R
thj-pin
Thermal shutdown threshold 150 165 °C
JSC
Single output (junction ambient) 90 °C/W
All outputs (junction ambient) 75 °C/W
Junction to Pin 18 °C/W
3/12
L9826
ELECTRICAL CHARACTERISTCS
(4.5V ≤ VCC ≤ 5,5V; -40°C ≤ TJ ≤ 150°C; unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
Supply voltage
I
ccSTB
I
ccOPM
Standby current without load (nRes = Low) 70 µA
Operating mode I
OUT1 ... 8
= 500mA
5mA
SPI - CLK = 3MHz
NCS = LOW
SDO no load
∆I
CC
during reverse output
∆I
CC
I
= -2A 100 mA
out
current
Inputs
(NONx. NCS, CLK, SDI, nRes)
V
V
V
R
Low level -0.3
INL
High level
INH
Hysteresis voltage 0.85 V
hyst
Input current VIN = V
I
IN
Pullup resistance
IN
CC
0.7·V
CC
-10 10 µA
50 250 kΩ
0.2·V
CC
VCC+0,3
(NONx, NCS, CLK, SDI)
Pulldown resistance (nRes)
V
V
C
Input capacitance 10 pF
IN
Serial data outputs
V
SDOH
V
SDOL
I
SDOL
C
High output level I
Low output level I
Tristate leakage current
Output capacitance f
SDO
Outputs OUT 1 ... 8
I
OUTL1 - 8
I
OUTL1 - 8
I
OUTL1 - 8
V
R
DSon
C
Leakage current OUTx = OFF; V
Leakage current OUTx = OFF; V
Leakage current OUTx = OFF; V
Output clamp voltage
clp
On resistance OUT 1 ... 8 I
Output capacitance V
OUT
= -4mA
SDO
= 3,2mA 0.4 V
SDO
NCS = high; 0V ≤ V
= 300kHz 10 pF
SDO
V
= 5V
CC
V
= 5V
CC
V
= 1V
CC
1mA ≤ I
≤ I
clp
outp
OUTx
OUTx
OUTx
; I
test
≤ V
SDO
= 25V;
= 16V;
= 16V;
= 10mA
CC
with
VCC -0.4
-10 10 µA
100 µA
100 µA
10 µA
45 62 V
correlation
= 500mA; Tj = +150°C 3.0 Ω
OUT
= 16V; f = 1MHz 300 pF
OUT
V
4/12
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